Passive transport is the movement of molecules across the cell membrane without the need for the input of cellular energy. This statement is true.
What is difference between Plasma Membrane and Passive Transport?Plasma membranes allow special substances to enter and exit the cell, preventing harmful material from entering and essential material from leaving. Plasma membranes are selectively permeable allowing some substances through while restricting others. If they give up this selectivity, the cell will be unable to fortify itself, and will be wiped out.
Most direct forms of membrane transport are passive. Passive transport is a naturally occurring phenomenon and does not require the cell to expend energy in order to carry out the movement.
Passive transport relies on the second law of thermodynamics instead of using cellular energy such as active transport which drive the movement of substances across cell membranes.
Thus, Passive transport is the movement of molecules across the cell membrane without the need for the input of cellular energy. This statement is true.
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The products of photosynthesis required to start cellular respiration are
A.Oxygen and ATP.
B.Water and Carbon dioxide.
C.NADP and Hydrogen.
D.Glucose and Oxygen.
E.Carbohydrates and NADP.
Autorise
A certain type of toad resembles tree bark with its brown color and rough skin. A
certain type of frog, has a bright yellow-green color with red toes and smooth skin.
How does the appearance of each organism most likely help them survive?
Answer
A
B
C
D
..
Both appearances act as camouflage.
Both appearances scare off predators.
The toad's appearance is to avoid detection, while the frog's appearance
is to scare off predators.
The toad's appearance is to scare off predators, while the frog
appearance is to avoid detection.
Answer: The answer is C
Explanation: I have my ways ;>
label the flower. please help i’d appreciate it
Answer:
A. Ovule
B. Ovary
C. Style
D. Stigma
E. Pistil
F. Anther
G. Stamen
H. Filament
I. Sepal
J. Petal
Explanation:
I took bio alr
describe the manner in which activators and repressors influence the rate of transcription initiation. how might chromatin structure be involved in such regulation?
Activators and repressors change the relationship of RNAP II to the transcription complex and DNA loops bring distant enhancer or silencer elements in proximity with promoter regions of the genes.
How does activators and repressors influence the rate of transcription initiation?Transcription boost transcription of genes. Repressors decrease the transcription. Groups of transcription factors binding the sites that are called enhancers and silencers can turn a gene on/off in specific parts of the body.
Activators and repressors regulate transcription in eukaryotes by interacting with general transcription factors and other components of the transcriptional machinery and also by inducing changes in the structure of chromatin.
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which of these was the dominant plant group at the time that dinosaurs were the dominant animals?
During the Mesozoic, gymnosperms and dinosaurs coexisted as the dominant species.
What took place throughout the Mesozoic?"The Age of Reptiles" was the Mesozoic Era, which lasted from 251.9 to 66 million years ago. The present Rocky Mountains rose as Pangaea started to split into the continents we know today. The dominant land and air animals were pterosaurs, crocodiles, and dinosaurs.
what is The Mesozoic Era is known as the Age with Dinosaurs for a reason.?The Mesozoic era, sometimes known as the "Middle Life," saw a fast diversification of life on Earth, including the appearance of dinosaurs, enormous reptiles, and other terrifying creatures. The time range, which roughly corresponds to 252 million years ago to 66 million years ago, is sometimes referred to as the age of reptiles or the era of dinosaurs.
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Why is genetic variation for necessary for evolution by natural selection?
Group of answer choices
Genetic variation results in different traits which can be selected for or against
Genetic variation creates new traits that increase the competition for resources.
Genetic variation makes organisms more susceptible to disease and many would die
Genetic variation produces new species through random changes in DNA
Answer:
Genetic variation is necessary for evolution by natural selection because it (A) results in different traits which can be selected for or against.
Explanation:
Natural selection is a process in which organisms with certain traits are more likely to survive and reproduce, while those with less advantageous traits are less likely to survive and reproduce. This results in the survival of the fittest and the evolution of new species over time. Without genetic variation, there would be no differences in traits and therefore no way for natural selection to occur.
The trp operon in e.coli regulates genes that code for enzymes required for synthesis of the amino acid tryptophan. the trp operon is a repressible operon. when tryptophan is not available in the environment, the trp repressor protein is____. therefore, rna polymerase can bind to the___to begin transcription.
It is not active to suppress trp. The promoter may so be bound by RNA polymerase, which will then start transcription.
An illustration would be genes.Numerous characteristics, such as your skin and hair colors, are determined by the genes you inherit. The red hair gene may have been passed on to Emma by her mother, who may have two genes—one for brown hair and one for red hair. She could have red hair if her father carries two genes for the color.
The significance of genesYour cells' growth and function are governed by instructions carried by your genes. The foundation of the body are cells. Billion of cells work together to form every component of your body. Chromosomes are the units that hold genes in place.
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When a portion of a population can no longer breed and produce fertile offspring with the rest of the population, then a ______ is present that prevents the two populations from sharing genes.
When a part of a whole population is not able to breed and give rise to fertile offspring with the remaining population, then a gametic isolation is present which checks the sharing of genes among the two populations.
A gametic isolation is a kind of a pre-zygotic barrier. Such type of a reproductive isolating mechanism ensures that fertilization does not occur following speciation. This biological mechanism prevents the sharing of genes among two populations when a part of a whole population is unable to breed successfully with the remaining population. The formation of a zygote is inhibited in a pre-zygotic barrier.
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Which type of process first occurred in the ecosystem around Mount St. Helens after it erupted?
Answer: Succession
Explanation: Succession that begins in an area with no remnants of an older community
How do I do these??
Answer:
Picture is blurry can u unblur it
Explanation:
atp is considered a high-energy molecule. when atp undergoes hydrolysis to adp, how much energy is produced?
One ATP molecule's hydrolysis releases 7.3 kcal/mol - energy (G = 7.3 kcal/mol of power).
What is referred to as bio energy?A variety of resources, including bioenergy, are available to assist us meet our need for energy. It is a type of renewable energy produced from different kinds of living organic matter, or biomass, which can be utilized to create products, heat, power, and transportation fuels.
What purposes serve bioenergy?The term "bioenergy" refers to the use of organic material (biomass) as an energy source for power (or electricity) generation and straightforward origin heat applications in all energy sectors, including for domestic, commercial, and industrial purposes as well as the creation of liquid fuels for transportation.
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In what two ways does cellular respiration seem to be the opposite of photosynthesis.
Answer:
Cellular respiration breaks down sugars to make ATP, while photosynthesis creates sugars. Photosynthesis creates O2 while respiration uses O2. Respiration creates CO2 while photosynthesis uses CO2. The processes overall chemical equations are mirror images of each other.
Explanation:
of the different factors that affect transpiration rates, which are negatively correlated with transpiration rate? choose all that apply.
Transpiration is affected by several factors. In the above question, the factor which affects transpiration negatively is Humidity, i.e. Option 1.
The process by which the plant body releases water vapors through its aerial portions is known as transpiration. The evaporation of water from a plant component is also referred to as transpiration. It is a key mechanism in plants that helps other processes and maintains water and nutrient balance.
The rate of transpiration is inversely related to the humidity of the atmosphere.
Stomata only open when there is light. As a result, transpiration is greatest during the day and lowest at night.
When soil moisture is less, roots absorb less water from the earth. As a result, the stomata close and the plant wilts. As a result, the rate of transpiration is reduced.
Therefore, humidity is the factor which affects transpiration negatively. The correct answer is option 1.
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The correct question is:
Of the different factors that affect transpiration rates, which are negatively correlated with transpiration rate? Choose all that apply.
1. Humidity
2. Light
3. Soil moisture
4. None
Two plants are heterozygous for seed shape and have round seeds. If the two plants are crossed, what is the probability that the offspring will have wrinkled seeds?
Answer: 25%
Explanation: Heterozygous means that an individual has two different versions, or alleles, of a gene. In this case, one plant has an allele for round seeds and an allele for wrinkled seeds, while the other plant also has an allele for round seeds and an allele for wrinkled seeds. When these two plants are crossed, each offspring will inherit one allele for seed shape from each parent.
The probability that an offspring will have wrinkled seeds is determined by the proportion of offspring that inherit the allele for wrinkled seeds from both parents. If both parents are heterozygous, this means that each parent has a 50% chance of passing on their allele for wrinkled seeds to their offspring. Therefore, the probability that an offspring will inherit the allele for wrinkled seeds from both parents is (0.5)(0.5) = 0.25, or 25%. This means that the probability that an offspring will have wrinkled seeds is 25%.
Answer:
A
Explanation:
just trust me bro
Malaria is caused by
Answer:
Malaria is a serious and sometimes fatal disease caused by a parasite that commonly infects a certain type of mosquito which feeds on humans. People who get malaria are typically very sick with high fevers, shaking chills, and flu-like illness. Four kinds of malaria parasites infect humans: Plasmodium falciparum, P.
Answer:
A parasite that most likely infects mosquitos. The mosquitos feed on humans which passes Malaria to humans.
Explanation:
People with Malaria usually have high fevers, shaking chills, and similar symptoms to the flu-illness.
organism a is eukaryotic, unicellular, and lacks a cell wall. organism b is eukaryotic, multicellular, has cell walls, and is autotrophic. in which kingdoms should these organisms be classified?
Multicellular, heterotrophic eukaryotic creatures without cell walls are found in the Kingdom Animalia.
Multicellular autotrophic eukaryotes belong to which kingdom?All multicellular eukaryotic organisms belong to the kingdom of Plantae. They are autotrophs since their food is produced using solar energy. Plants' cell walls contain cellulose.
Unicellular eukaryotes are those that lack a cell wall?In the majority of prokaryotic cells, the plasma membrane is enclosed by a rigid cell wall that gives the organism its form. Cell walls are present in plants but not in vertebrate eukaryotes. Prokaryotic cells contain cell walls that are chemically distinct from eukaryotic plant cells, which are primarily made of cellulose.
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How are the algae cells different from the other cells?
Hello there, Jaelyn!
Although algae and plants are both photosynthetic and categorized as eukaryotes (cells with unique features such as the nucleus), they vary in the following ways: Algae can be unicellular or multicellular, whereas plants contain numerous cells.
Have an amazing day!
-William
What are some possible uses for technology that can identify people based on their dna?.
Answer:
Forensics
Explanation:
Forensic teams often use DNA to determine if a person is a suspect or if they should be eliminated as a suspect. DNA can sometimes prove a person’s innocence or guilt, or, at least, it can prove whether a person was in the vicinity of the crime scene.
polypeptides in the er are usually larger than polypeptides synthesized from the same mrna that have not entered the er.
Polypeptides in the er are usually larger than polypeptides synthesized from the same mrna that have not entered the er.
Hence, the above statement is True
The size of polypeptides inside the ER is typically less than that of polypeptides made from the same mRNA but not yet inside the ER. On the rough ER, proteins for plasma membrane transmembranes are synthesised. Through a translocon, a freshly created polypeptide chain enters the ER.Peptide synthesis is primarily carried out on the rough endoplasmic reticulum (RER). By sequentially digesting transfer RNAs (tRNA) with their attached amino acids, messenger RNA (mRNA), which is encoded by nuclear DNA, is translated into peptides by cytosolic ribosomes.To know more about DNA here
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6. Examine the horse forelimb fossil evidence below. Describe the evolution of the forelimb of the horse. VI is the most recent fossil while I is the oldest fossil.
Earlier horse ancestors were specialized for living in tropical forests,whereas current horses have evolved to live in drier environments.The evolution of tooth forms, foot and limb architecture, and grazing habits with predator-escape adaptations are all seen in successive fossils.
How is the evolution of a horse shown in its fossil history?In North America, there is a lengthy, continuous fossil sequence for horses dating back 55 million years, which provides the concrete evidence can trace individual steps and changes in evolution over a long period of time, he said. "Horses are a really good illustration of this," he said.
What kind of evolution are horse fossils displaying?As a result, this collection of prehistoric horses has gained widespread recognition as a classic, "textbook" illustration on development .The development of the horse is the most frequently cited instance of orthogenesis, in just about any definition of the word, according to Wallis (1944, p. 157) more than 50 years ago.
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if mendel crossed a pea plant homozygous dominant for yellow peas (yy) with a homozygous recessive plant with green peas (yy), what percentage of offspring will be homozygous dominant?
The percentage of offspring of homozygous dominant will be 50%.
Gregor Mendel, the Father of Genetics, utilised pea plants as a model to study inheritance for a variety homozygous of reasons, the most important of which is that they have a wide range of phenotypic features, such as diverse colours and shapes.
Mendel studied the inheritance patterns of parental genes in terms of how these genetic qualities homozygous manifested in the phenotype of the children, and he classified these traits as dominant (two capital letters; AA) or recessive (one capital letter; AA). He used yellow and green pea plants to test this in the trials. When he crossed yellow and green pea plants, he discovered that the first generation was yellow. This meant that the colour yellow (YY) was dominant, while the colour green (YY) was recessive.
Therefore, the percentage of offspring of homozygous dominant will be 50%.
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the process of introducing a dead pathogen or nontoxic part of a pathogen into the body to provoke an immune response that prevents a certain disease is called
The process of introducing a dead pathogen or nontoxic part of a pathogen into the body to provoke an immune response that prevents a certain disease is called Vaccination .
Vaccination is the process of administering a vaccine to aid the immune system in developing immunity to a disease. Vaccines contain a weakened, live, or killed microorganism or virus, as well as proteins or toxins from the organism.
Vaccination is a simple, secure, and effective way to safeguard yourself against potentially fatal diseases before being exposed to them. It strengthens your immune system by utilizing your body's own natural defenses to build resistance to specific infections.
Vaccines assist your body to produce protective antibodies, which are proteins that help your body fight infections. By getting vaccinated, you can protect yourself while also preventing the spread of preventable diseases to others in your community.
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Which division of the autonomic nervous system returns the body to a relaxed condition after an emergency?.
Explanation:
The parasympathetic nervous system is responsible for the body's rest and digestion response when the body is relaxed, resting, or feeding. It basically undoes the work of sympathetic division after a stressful situation. The parasympathetic nervous system decreases respiration and heart rate and increases digestion.
Which four individual muscles make up the quads in the anterior femoral region of the leg?.
Four individual muscles make up the quads in the anterior femoral region of the leg are. Rectus femoris, Vastus lateralis, Vastus medialis and Vastus intermedius .
Rectus femoris is attached to the hip and helps to extend or raise the knee. Vastus lateralis, is the largest part of the quadriceps femoris, a muscle in the thigh. Four muscles in quad group helps to straighten your knee the rectus femoris, the vastus intermedius, the vastus lateralis, and the vastus medialis.
Only biceps femoris is not a member of the quadriceps and is actually an antagonist muscle found on the posterior leg.
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You have an antibody raised against the peptide SHHLKEATIVKE, which,
proteins would your antibody recognise?
Your antibody would recognize polysaccharide if it were a protein.
What proteins also go by the name of antibodies?Proteins called antibodies defend you when your body comes into contact with an unwelcome chemical. Antibodies, which are made by your immune system, bind to these foreign chemicals and drive them out of your body. Immunoglobulin is another name for an antibody.
What proteins are also known as antibodies?When your body comes into contact with an undesirable chemical, antibodies, proteins, protect you. Your immune system produces antibodies that bind to these foreign substances and expel them from your body. An alternative name for an antibody is immunoglobulin.
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What is the difference between an inhibitory and an excitatory post synaptic potential?.
Although the details of postsynaptic action can be complex, there are simple rules that distinguish between postsynaptic excitation and inhibition.
EPSPs have reversal potentials more positive than the action potential threshold and IPSPs have reversal potentials more negative than the threshold.Excitatory postsynaptic potentials (EPSPs) bring the potential of a neuron close to its firing threshold. Inhibitory postsynaptic potentials (IPSPs) shift the charge across the membrane away from the firing threshold. Postsynaptic potentials undergo spatial and temporal addition. Neurons communicate via electrical currents called action potentials that are either excitatory or inhibitory. Currents responsible for sharing information about one action potential with the next neuron, inhibitory currents reduce the likelihood of such transmission occurring.
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Climate scientists use numerical climate __________ to project the future climate.
Climate scientists use numerical climate model to project the future climate.
Climate models are computer programmes that scientists use to study how our planet is evolving and forecast future climate. Computerized climate models operate similarly to a laboratory. They let researchers to examine how several variables combine to affect a region's climate.
Numerical climate models study the interactions of the major climatic drivers, such as the atmosphere, seas, land surface, and ice, using quantitative methodologies. They serve a number of functions, from studying the dynamics of the climate system to making climate forecasts.
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1 point
This is a solution that contains an equal amount of dissolved particles as within the cell; cell doesn’t change shape or size
Isotonic solution is a solution that contains an equal amount of dissolved particles as within the cell; cell doesn’t change shape or size.
What is a Solution?This is referred to as a homogeneous mixture which consists of one or more solutes dissolved in a solvent such as water.
There are different types of solution and an example is Isotonic solution which contains an equal amount of dissolved particles as within the cell and the process of osmosis which involves the movement of solute molecules doesn't occur in the cell which is therefore the reason why the cell doesn’t change shape or size.
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Which of the following statements accurately describes the difference between cellular and humoral immunity?
Cellular immunity directly attacks pathogens and infected cells, while humoral immunity releases antibodies to do so
Cellular immunity utilizes B-lymphocytes, while humoral immunity utilizes T-lymphocytes
Cellular immunity produces antibodies, while humoral immunity uses perforins
Neither defends against bacteria
While humoral immunity produces antibodies to do this, cellular immunity assaults pathogens and infected cells directly.
What distinguishes cellular immunity from humoral immunity?The primary distinction between humoral and cell-mediated immunity is the production of antigen-specific antibodies by humoral immunity as opposed to cell-mediated immunity.T lymphocytes, on the other hand, cause apoptosis in infected cells to cause their death.B Cells produce antibodies during humoral immunity reactions after becoming activated by free antigens found in bodily fluids.T cells attack infected body cells that have pathogen antigens on their surface during cell-mediated immune responses.Humoral immunity is an adaptive immune response that is exhibited by the B cells' generation of antibodies.It grows in the bone marrow.Plasma cell development in B cells may be induced.A plasma cell makes an antibody.When the B cell receptor and the antigen interact, antibodies are created.To learn more about humoral and cellular immunity refer to:
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DOMAIN 2 lesson 2
Gmetrix
Is in the photo pls help
Plssssss
HELPP
Answer:
1. Email Marketing
2. search engine marketing
3. Behavioral
4. Demographic
5. CAC (Customer acquisition cost)
Explanation:
The correct blanks of marketing plans for 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 are email marketing, search engine advertising, historical, Demographic, customer acquisition and retention costs, marketing expenses, cost-effective, subtracting, executive summary and promotion.
Fill in the blanks:
1. A marketing method that uses customized newsletters to engage with customers is email marketing. [Platforms and Marketing Methods]
2. A marketing method that uses ads on a website within a search engine is search engine advertising. [Marketing Platforms and Marketing Methods]
3. The four segments of sales data are historical, geographical, demographic, and psychographic. [Market Reactions and Sales Data]
4. Demographic data provides information about a customer's age, gender, or ethnicity. [Market Reactions and Sales Data]
5. Investors use customer acquisition and retention costs to determine the cost of acquiring new customers. [Customer Acquisition and Retention Costs].
6. The formula used to determine customer acquisition costs is marketing expenses plus sales expenses divided by the number of new customers for the period. [Customer Acquisition and Retention Costs]
7. It is more cost-effective to keep current customers than to acquire new customers. [Customer Acquisition and Retention Costs]
8. Customer retention rates are found by subtracting the number of new customers acquired during a period from the number of customers at the end of a period, then dividing by the number of customers from the start of the period and multiplying by 100. [Customer Acquisition and Retention Costs]
9. An executive summary provides an overview of the marketing plan. [Elements of a Marketing Plan]
10. The four P's of the marketing mix are product, price, place, and promotion. [Elements of a Marketing Plan]
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